Study on Basement Lithology Identification Method in Bongor Basin, Chad

Since the successful test of the first buried hill well in 2013, five major buried hill structural belts have obtained the oil and gas discovery. Well drilling and sidewall coring analysis on the rocks of buried hill zone indicate that 2 categories, 14 sub-categories and 30 types of rock types could be divided in Bongor Basin, Chad. So how to identify the Basement lithology is the most critical and primary problem in this area. Based on lithological qualitative identification, core scale logging method is applied in order to establish lithological quantitative classification standard of conventional well logging for Bongor buried hill. By using the dominant lithology identification technology, combined with oil testing and imaging logging, the coincidence rate of Basement logging interpretation is improved.